Naming Amides - Video Tutorials & Practice Problems
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concept
Intro to Amides Concept 1
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Now recall that amides consist of a carbonel group connected to a nitrogen, which could have its origins from an amine group. Now, amides can be classified as either being primary secondary or tertiary. Here, we have an example of an amide here. At the far right here, we have our carbonel con connected to our nitrogen group. Now, if your primary secondary or tertiary, it's based on how many carbons are directly attached to the nitrogen. In this first one, there's only one carbon directly attached to my nitrogen. So this is a primary mind for the next one, there are two carbons directly attached to the nitrogen. So this is secondary and then here there's three. So this is tertiary and that's how we look at the substitution around a mines. It's the number of carbons directly attached to the nitrogen.
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Intro to Amides Example 1
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So here we have to classify each of the given compounds as primary secondary or tertiary minds or neither. Now, here, if we take a look, this is an aide because we have a carbon connected to a nitrogen directly and there's only one carbon directly connected to that nitrogen. So it is a primary amide for the next one, there is no carbonel present. So it's just sp three carbons connected to a nitrogen. So this is actually in a mean, but we're not asking about a mean. So we'll put neither or neither. For the next one, we have our carbon eel directly connected to a nitrogen. So this isn't a mind and there are 123 carbons directly attached to it. So this is a tertiary of mind. Then finally, for this last one, it is also an amide and it's directly connected to 12 carbons in terms of the nitrogen. So this would be a secondary amide. And that's how we classify each of the given compounds.
3
concept
IUPAC Rules for Naming Amides Concept 2
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35s
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So when it comes to the Iupac naming of amides, we're going to see the carbon chain with the carbon group is named as though it was a Carboy acid. Remember carbolic acids end with OIC acid. So what we do here is we modify the ending from OIC acid to just a mite. And our naming convention will be our substituents that are connected to our parent and we're modifying the ending from again OIC acid to amide. So this is the approach we're gonna take when it comes to IAC naming of different types of amides that we'll see.
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example
IUPAC Rules for Naming Amides Example 2
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2m
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Provide a systematic name for the following amide. Now, here's step one, we is we have to identify the alkyl group or groups connected to the nitrogen atom. So here we're talking about this right here. That is a one carbon alk group. So it's a methyl group. Next, we're gonna name the alki groups as substituents, which means they're gonna go at the beginning of the name and we're gonna say here N and this is important, it has to be italicized. This will represent an N substituent and it's written before the alke name to indicate is connected to the nitrogen atom. Now, when more than one identical substituent, we're gonna use the prefix die step three is we identify the carbon chain connected to the carbonel group. So C double bond O step four, as we figure out the length of the carbon chain starting from the carbonel group, and we're gonna say the carbonel group as carbon number one is implied from that point. We use the same rules that we learn in terms of naming Ester's to name this particular Ahmad, right? So if we take a look here, so we have a methyl group here and it's an N methyl since it's connected to the nitrogen, remember has to be written in, in italics. And then we're gonna say here this chain with the carbonel is 1234 and five. So that's five carbons there. And then we have this Ethel group over here that is also another substituent. It's located on carbon number three. So alphabetical order E comes before M so three ethel N methyl, it's a five carbon chain. So that's pentane. But here we're gonna change the E ending of Pentane to amide. So it's Pet amide. So this will be the name of this particular amide.
So when it comes to the common naming of a mind, we're going to say they follow the same rules as Iupac except the parent chain consists of the common name prefixes. Now here, the modification of the ending is still going from OIC acid to a mind. So if we take a look at this example, it says provide a na a common name for the following amide. So if we take a look, we'd say that we have a methyl and then 1234, a beetle attached to the nitrogen. Those are N substituents alphabetically B comes before M. So we'd have N beetle, N methyl and then the chain with the carbon has 123 carbons. Since this is a common name, the prefix will be propion and then it is an amide. So we just add a mite to the end. So this would be the name, the common name of this particular amide structure.
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Problem
Problem
Assign a common name to the following.
A
N-pentyl-N-tert-butylacetamide
B
N-tert-butyl-N-pentylethanamide
C
N-tert-butyl-N-pentylacetamide
D
N-hexyl-N-tert-butylethanamide
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Problem
Problem
Draw a structure from the following name: N-cyclopentyl-N-propylvaleramide.